题目内容
计算:(
-
)÷
=______.
| x |
| x-2 |
| x |
| x+2 |
| 4x |
| x-2 |
原式=
•
=
•
=
.
故答案为:
| x(x+2)-x(x-2) |
| (x+2)(x-2) |
| x-2 |
| 4x |
| 4x |
| (x+2)(x-2) |
| x-2 |
| 4x |
| 1 |
| x+2 |
故答案为:
| 1 |
| x+2 |
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